Vaporization device and heating assembly thereof

ABSTRACT

A heating assembly includes: a heating body; a shunt mesh disposed on the heating body; an upper cap covered on the heating body and the shunt mesh; and a replaceable filter mesh disposed above the shunt mesh for placing a vaporization medium. A vaporization cavity in air communication with a heating element is formed on the upper cap. The replaceable filter mesh is replaceably disposed in the vaporization cavity.

CROSS-REFERENCE TO PRIOR APPLICATION

Priority is claimed to Chinese Patent Application No. CN 202121385323.9, filed on Jun. 21, 2021, the entire disclosure of which is hereby incorporated by reference herein.

FIELD

The present invention relates to the field of vaporization, and more specifically, to a vaporization device and a heating assembly thereof.

BACKGROUND

A vaporization device is a device configured to heat a vaporization medium such as plant tobacco leaves or opium paste to generate vapor for a user to inhale. A heating assembly of the vaporization device generally includes a heating element and a shunt mesh. The heating element can generate heat after energized to heat air into hot air, and the hot air heats the vaporization medium after shunted by the shunt mesh. The vaporization medium is placed on the shunt mesh, which may easily pollute the shunt mesh after a plurality of times of heating.

SUMMARY

In an embodiment, the present invention provides a heating assembly, comprising: a heating body; a shunt mesh disposed on the heating body; an upper cap covered on the heating body and the shunt mesh; and a replaceable filter mesh disposed above the shunt mesh and configured to place a vaporization medium, wherein a vaporization cavity in air communication with a heating element is formed on the upper cap, and wherein the replaceable filter mesh is replaceably disposed in the vaporization cavity.

BRIEF DESCRIPTION OF THE DRAWINGS

Subject matter of the present disclosure will be described in even greater detail below based on the exemplary figures. All features described and/or illustrated herein can be used alone or combined in different combinations. The features and advantages of various embodiments will become apparent by reading the following detailed description with reference to the attached drawings, which illustrate the following:

FIG. 1 is a three-dimensional schematic structural diagram of a vaporization device with a suction nozzle at a first position according to a first embodiment of the present invention;

FIG. 2 is a schematic structural cross-sectional view of the vaporization device shown in FIG. 1 ;

FIG. 3 is a three-dimensional schematic structural diagram of the vaporization device in FIG. 1 with the suction nozzle at a second position;

FIG. 4 is a schematic structural cross-sectional view of the vaporization device shown in FIG. 3 ;

FIG. 5 is a schematic structural exploded view of the vaporization device shown in FIG. 3 ;

FIG. 6 is a schematic structural exploded view of a suction nozzle assembly in FIG. 5 ,

FIG. 7 is a schematic structural exploded view of a heating assembly in FIG. 5 ;

FIG. 8 is a schematic structural cross-sectional view of the heating assembly in FIG. 5 ;

FIG. 9 is a three-dimensional schematic structural diagram a heating cover in FIG. 7 ;

FIG. 10 is a schematic structural cross-sectional view of a heating assembly of a vaporization device according to a second embodiment of the present invention;

FIG. 11 is a three-dimensional schematic structural diagram of a replaceable filter mesh in FIG. 10 ;

FIG. 12 is a schematic structural cross-sectional view of a heating assembly of a vaporization device according to a third embodiment of the present invention;

FIG. 13 is a three-dimensional schematic structural diagram of a replaceable filter mesh in FIG. 12 ; and

FIG. 14 is a schematic structural cross-sectional view of a heating assembly of a vaporization device according to a fourth embodiment of the present invention.

DETAILED DESCRIPTION

In an embodiment, the present invention provides an improved heating assembly and a vaporization device including the heating assembly for the foregoing defects in the related art.

In an embodiment, the present invention provides a heating assembly, including a heating body, a shunt mesh disposed on the heating body, an upper cap covered on the heating body and the shunt mesh, and a replaceable filter mesh disposed above the shunt mesh and configured to place a vaporization medium, where a vaporization cavity in air communication with a heating element is formed on the upper cap, and the replaceable filter mesh is disposed in the vaporization cavity in a replaceable manner.

In some embodiments, a vent gap is formed between the replaceable filter mesh and the shunt mesh. In some embodiments, the replaceable filter mesh includes a bottom wall, and a plurality of first filter holes for airflow to run through are distributed on the bottom wall.

In some embodiments, the bottom wall includes a first region located at a center and a second region surrounding the first region, and a distribution density of the plurality of first filter holes in the first region is less than a distribution density in the second region.

In some embodiments, a distribution density of the plurality of first filter holes on the bottom wall gradually increases from a center to a periphery.

In some embodiments, the bottom wall protrudes upward to form a cylindrical protruding portion, and a top wall and a side wall of the protruding portion are provided with a plurality of second filter holes for airflow to run through.

In some embodiments, the replaceable filter mesh further includes a cylindrical side wall extending upward from an outer periphery of the bottom wall.

In some embodiments, an airflow gap is formed between an outer wall surface of the cylindrical side wall and an inner wall surface of the vaporization cavity, and the cylindrical side wall is provided with a plurality of third filter holes for airflow to run through.

In some embodiments, a size of a cross section of the cylindrical side wall decreases from top to bottom.

In some embodiments, the replaceable filter mesh further includes a flange extending outward from an upper outer edge of the cylindrical side wall, and the flange abuts against an upper end surface of a heating cover.

In some embodiments, the replaceable filter mesh is in a shape of a plate, and an outer edge of the replaceable filter mesh concaves inward to form at least one groove.

In some embodiments, the heating body includes a base, a heating cover disposed on the base, and a heating element disposed between the base and the heating cover and in air communication with the vaporization cavity.

In some embodiments, a heating cavity configured to place the heating element is formed between the base and the heating cover, a diffusion cavity is formed between the heating cover and the shunt mesh, and a convergence hole communicating the heating cavity with the diffusion cavity is formed on the heating cover.

In some embodiments, the shunt mesh includes a shunt region disposed corresponding to the diffusion cavity, and a plurality of airflow holes for airflow to run through are distributed on the shunt region; and

the shunt region includes a center region located at a center and a peripheral region surrounding the center region, and a distribution density of the plurality of airflow holes in the center region is less than a distribution density in the peripheral region.

In some embodiments, a central axis of the convergence hole overlaps with a central axis of the diffusion cavity.

In some embodiments, the heating cavity surrounds the outside of the convergence hole, and a convergence groove for communicating the heating cavity with the convergence hole is further formed between the base and the heating cover.

In some embodiments, an upper wall surface and/or a lower wall surface of the heating cavity protrude outward to form at least one thermal insulation rib for the heating element to abut against.

In some embodiments, an outer edge of the shunt mesh protrudes outward to form at least one limiting protrusion, and the limiting protrusion abuts against an inner wall surface of the upper cap.

In some embodiments, the heating assembly further includes a locking member surrounded outside the upper cap and the base and locking the upper cap and the base.

In some embodiments, the heating assembly further includes a temperature measuring element configured to measure an air temperature in the heating assembly.

The present invention further provides a vaporization device, including a body and the heating assembly according to any one of the foregoing disposed in the body.

Implementation of the present invention at least has the following beneficial effects: a replaceable replaceable filter mesh is disposed in the vaporization cavity to place a vaporization medium, and the replaceable filter mesh is taken out after the vaporization medium is heated, which is easy to discard or easy for a user to clean and reuse the replaceable filter mesh, thereby reducing pollution to the shunt mesh.

To have a clearer understanding of the technical features, objectives, and effects of the present invention, specific implementations of the present invention are described in detail with reference to the accompanying drawings.

FIG. 1 to FIG. 9 show a vaporization device 100 according to a first embodiment of the present invention. The vaporization device 100 may be approximately in a shape of an elliptical cylinder and may include a body 1, a suction nozzle assembly 3 longitudinally disposed above the body 1, and a heating assembly 2 disposed in the body 1. The suction nozzle assembly 3 may be detachably mounted above the body 1, to help dismount the suction nozzle assembly 3 from the body 1 for cleaning, and a vaporization medium may be added to the heating assembly 2 after the suction nozzle assembly 3 is dismounted. The heating assembly 2 may generate heat after energized to heat air into hot air, the hot air flows to the vaporization medium to heat and vaporize the vaporization medium into vapor, and the vapor flows out through the suction nozzle assembly 3 for a user to inhale. It may be understood that, the vaporization device 100 is not limited to the shape of an elliptical cylinder, and may alternatively in another shape such as a shape of a cylinder, a square cylinder, or a flat cylinder.

In some embodiments, the body 1 may include a cylindrical shell 11, a button 18 disposed on the shell 11, a bottom cover 16 disposed below the shell 11, a battery 13 disposed in the shell 11, and a main board 15 disposed in the shell 11. The battery 13 is electrically connected to the main board 15, the main board 15 is electrically connected to the heating assembly 2, and the main board 15 may control on/off between the battery 13 and the heating assembly 2 under action of the button 18.

In some embodiments, the body 1 may further include a holder 12 longitudinally disposed in the shell 11. The battery 13 may be disposed in the holder 12, and the main board 15 may be disposed on one side of the holder 12. An upper portion of the holder 12 forms an accommodating groove 120 with a top opening, and the heating assembly 2 may be placed in the accommodating groove 120 through the top opening. The accommodating groove 120 may be provided with a thermal insulation pad 14, and the heating assembly 2 may abut against a bottom wall of the accommodating groove 120 through the thermal insulation pad 14, which helps improve the thermal insulation performance between the heating assembly 2 and the holder 12. The thermal insulation pad 14 may be generally made of a material with high temperature resistance and low thermal conductivity such as thermal insulation cotton. A top portion of the body 1 may be further provided with at least one magnetic member 17 configured to magnetically connected to the suction nozzle assembly 3. In this embodiment, there are two magnetic members 17, and the two magnetic members 17 may be embedded in a top portion of the holder 12 and respectively located on two opposite sides of the accommodating groove 120.

As shown in FIG. 2 to FIG. 6 , in some embodiments, the suction nozzle assembly 3 may include a suction nozzle base 32 and a suction nozzle 31 rotatably disposed on the suction nozzle base 32. The suction nozzle base 32 includes an air guide channel 320 in air communication with the heating assembly 2, and the suction nozzle 31 includes a rotation shaft portion 312 rotatably disposed on the suction nozzle base 32 and a suction nozzle portion 311 transversely extending out from the rotation shaft portion 312. A rotation central axis of the rotation shaft portion 312 is disposed in a bias manner relative to a central axis of the suction nozzle portion 311 and a central axis of the suction nozzle base 32 respectively. An air suction channel 3110 is formed on the suction nozzle portion 311, and the air suction channel 3110 communicates the air guide channel 320 with the outside, to guide vapor generated after vaporization of the heating assembly 2 out for a user to inhale. The air suction channel 3110 includes an air suction end away from the rotation shaft portion 312, and the suction nozzle portion 311 can transversely rotate around the rotation shaft portion 312 between a first position and a second position relative to the suction nozzle base 32. When the air suction channel 3110 is at the first position, the air suction end of the air suction channel 3110 is retracted to the suction nozzle base 32. When the air suction channel 3110 is at the second position, the air suction end of the air suction channel 3110 protrudes out of the suction nozzle base 32.

In some embodiments, the air guide channel 320 may include a first air guide channel 3201, a second air guide channel 3202, and a third air guide channel 3203 communicated with each other from bottom to top. The first air guide channel 3201 may be formed through rightly upward extension of a bottom surface of the suction nozzle base 32, and may be disposed coaxially with the body 1 and the heating assembly 2. A top position of the suction nozzle base 32 includes a mounting plane 321, the third air guide channel 3203 may be formed through downward extension of the mounting plane 321, and a central axis of the third air guide channel 3203 is disposed in a bias manner relative to a central axis of the first air guide channel 3201. In this embodiment, the mounting plane 321 is a slope and forms a certain angle with a horizontal plane, an extending direction of the third air guide channel 3203 is perpendicular to the mounting plane 321 and forms a certain angle with a vertical direction, and the third air guide channel 3203 is disposed on a relatively high side of the mounting plane 321. In other embodiments, the mounting plane 321 may be alternatively parallel to the horizontal plane, and the extending direction of the third air guide channel 3203 may be alternatively parallel to the vertical direction.

The rotation shaft portion 312 may be rotatably disposed in the third air guide channel 3203. An airflow channel 3120 in communication with the air guide channel 320 is formed on the rotation shaft portion 312, and the airflow channel 3120 may be disposed coaxially with the third air guide channel 3203. The air guide channel 320, the airflow channel 3120, and the air suction channel 3110 are communicated with each other sequentially, to form an air outlet channel for guiding vapor out. The suction nozzle portion 311 is approximately in a shape of an elliptical sheet and the air suction channel 3110 in communication with the airflow channel 3120 is formed in a length direction of the suction nozzle portion. The suction nozzle portion 311 is mounted on the mounting plane 321 and may transversely rotate by 360 degrees in a plane overlapping with or parallel to the mounting plane 321. When the suction nozzle portion 311 is at the first position, the suction nozzle portion 311 is retracted to the suction nozzle base 32, an outer edge of the suction nozzle portion 311 overlaps or approximately overlaps with an outer edge of the mounting plane 321, which can greatly reduce a space occupied by the vaporization device and facilitates accommodation and carrying. When the suction nozzle portion 311 is at the second position, the air suction end of the suction nozzle portion 311 protrudes out of the suction nozzle base 32 and extends oblique upward to facilitate a user to inhale through mouth. According to this structure configuration of the suction nozzle assembly, a path of the air outlet channel of the vapor can be greatly extended, so that an air temperature when the vapor is output is greatly reduced, and the space occupied by the vaporization device may be relatively small.

In some embodiments, the suction nozzle assembly 3 may further include a filter mesh 35 disposed in the first air guide channel 3201, a seal sleeve 34 sealedly disposed between an outer wall surface of the filter mesh 35 and an inner wall surface of the first air guide channel 3201, a clasp member 33 detachably clamped on the rotation shaft portion 312, a seal ring 36 sealedly sleeved on the rotation shaft portion 312, and at least one magnetic member 37 embedded in a bottom of the suction nozzle base 32.

The filter mesh 35 may be in a shape of a bowl and may be made of a metal material such as stainless steel. The filter mesh 35 may filter out impurities doped in the vapor, to prevent the impurities from being inhaled in a mouth of the user, thereby improving the user experience. A bottom wall of the filter mesh 35 is provided with a plurality of filter holes 350 for airflow to run through, and the vapor generated through vaporization of the heating assembly 2 enters the air guide channel 320 through the filter holes 350. An upper periphery of the filter mesh 35 may protrude outward to form an annular positioning flange 351, and the positioning flange 351 may abut against an upper end of the first air guide channel 3201. An outer edge of the positioning flange 351 may concave inward to form at least one groove 3510, so that the user may take out the filter mesh 35 by using tools such as a nipper.

The seal sleeve 34 is embedded in a lower portion of the suction nozzle base 32 and may be made of an elastic material such as silica gel. A bottom surface of the seal sleeve 34 extends upward to form a vent groove 340, an inner wall surface of the vent groove 340 defines the first air guide channel 3201, and the filter mesh 35 is tightly embedded in the vent groove 340. The magnetic member 37 is configured to be magnetically connected to the body 1. In this embodiment, there are two magnetic members 37 and are respectively disposed on two sides of the first air guide channel 3201, and the two magnetic members 37 are disposed with the two magnetic members 17 in a one-to-one correspondence and magnetically connected to each other respectively.

A fasten groove 3120 is formed on the rotation shaft portion 312, and the clasp member 33 is detachably clamped in the fasten groove 3120 to implement fast mounting and dismounting of the suction nozzle base 32 and the suction nozzle 31. The clasp member 33 may include an opening ring 331 and an extending portion 332 connected to the opening ring 331. The fasten groove 3120 may be in a shape of a circle and is formed by the outer periphery of the rotation shaft portion 312 concaving inward in a radial direction. The opening ring 331 is clamped in the circular fasten groove 3120, an upper end surface of the opening ring 331 abuts against a lower end surface of the third air guide channel 3203, and a lower end surface of the opening ring 331 abuts against a lower end surface of the ring-shaped fasten groove 3120. The extending portion 332 may be formed by one side away from an opening of the opening ring 331 through bending obliquely downward, and the extending portion 332 may facilitate the user to manually mount and dismount the clasp member 33. When the suction nozzle assembly 3 is dismounted, the seal sleeve 34 may be taken out from the below of the suction nozzle base 32, the filter mesh 35 is then dismounted from the seal sleeve 34, the clasp member 33 is dismounted from the rotation shaft portion 312, and the suction nozzle 31 is dismounted from the above of the suction nozzle base 32. The structure design of the suction nozzle assembly enables the suction nozzle assembly to be dismounted into components conveniently, so that oil stains and dust accumulated after inhalation of the components can be immersed (such as ethanol) and cleaned.

The seal ring 36 may be in a shape of a circle and sleeved in the circular fasten groove 3120, an upper end surface of the seal ring 36 abuts against an upper end surface of the circular fasten groove 3120, and a lower end surface of the seal ring 36 abuts against an upper end surface of the third air guide channel 3203. The seal ring 36 may be made of an elastic material such as silica gel and work with the clasp member 33 to implement axial direction positioning of the rotation shaft portion 312 in the third air guide channel 3203.

As shown in FIG. 7 to FIG. 9 , in some embodiments, the heating assembly 2 may include a heating body 20, an upper cap 27 covered on the heating body 20, and a shunt mesh 25 disposed between the heating body 20 and the upper cap 27. The heating body 20 may include a base 21, a heating cover 22 disposed on the base 21, and a heating element 231 disposed between the base 21 and the heating cover 22.

In some embodiments, the heating element 231 may be an approximately U-shaped metal heating wire. Two electrode leads 232 are respectively welded on two ends of the heating element 231, and the heating element 231 is electrically connected to the main board 15 through the two electrode leads 232. The heating cover 22 and the base 21 may be both made of a material with high temperature resistance and low thermal conductivity, and an approximately U-shaped heating cavity 2210 is formed between the heating cover 22 and the base 21. The heating element 231 is disposed in the heating cavity 2210 and heat air in the heating cavity 2210 after energized to generate heat. Side walls of the base 21 and the heating cover 22 are correspondingly provided with at least one air inlet 2220 communicating the heating cavity 2210 with the outside. In this embodiment, there are two air inlets 2220, and the two electrode leads 232 may be led out from the two air inlets 2220 respectively. It may be understood that in other embodiments, the air inlet 2220 may be alternatively only formed on the side wall of the base 21 or the heating cover 22, or the air inlet 2220 may be alternatively formed on a bottom wall of the base 21.

A convergence hole 2250 longitudinally runs through the heating cover 22, and the heating cavity 2210 surrounds the outside of the convergence hole 2250. A convergence groove 2230 communicating the heating cavity 2210 with the convergence hole 2250 is further formed between the heating cover 22 and the base 21, air introduced by the two air inlets 2220 is heated in the heating cavity 2210 by the heating element 231 to form hot air, and the hot air flows to the convergence hole 2250 after converged by the convergence groove 2230. In this embodiment, the heating cavity 2210 and the convergence groove 2230 may be both formed on a bottom of the heating cover 22, and the convergence groove 2230 may be in communication with one side of the convergence hole 2250 away from the two air inlets 2220 and extend in a length direction of the heating cover 22.

In some embodiments, the base 21 may include a plate-shaped substrate portion 211 and a circular wall portion 212 extending upward from an outer periphery of the substrate portion 211. The heating cover 22 is disposed in the wall portion 212 and may abut against the substrate portion 211. An outer wall surface of the heating cover 22 may protrude outward to form at least one thermal insulation protrusion 2211, and the heating cover 22 abuts against an inner wall surface of the wall portion 212 through the at least one thermal insulation protrusion 2211, so that direct contact thermal conduction between the outer wall surface of the heating cover 22 and the inner wall surface of the wall portion 212 may be prevented, which facilitates thermal insulation between the heating cover 22 and the base 21. An upper end surface of the substrate portion 211 may protrude outward to form at least one thermal insulation rib 2111, and a lower end of the heating element 231 abuts against and is mounted on the at least one thermal insulation rib 2111, which can greatly reduce a direct contact area between the heating element 231 and the base 21 to facilitate thermal insulation. A lower end surface of the heating cover 22 may protrude downward to form at least one thermal insulation rib 2212, and an upper end of the heating element 231 abuts against and is mounted on the at least one thermal insulation rib 2212, which can greatly reduce a direct contact area between the heating element 231 and the heating cover 22 to facilitate thermal insulation. In this embodiment, there are three thermal insulation ribs 2111 and three thermal insulation ribs 2212 respectively, which may be disposed in a one-to-one correspondence.

The shunt mesh 25 is disposed above the heating cover 22 and includes a shunt region S provided with a plurality of airflow holes 250. A diffusion cavity 2260 is formed between the heating cover 22 and the shunt mesh 25, after the hot air flowing out from the convergence hole 2250 is diffused in the diffusion cavity 2260, the hot air is then redistributed through the plurality of airflow holes 250 on the shunt mesh 25, so that heating of the vaporization medium is more uniform. In this embodiment, the filter mesh 25 is in a shape of a flat plate and may be made of a metal material such as stainless steel. A top surface of the heating cover 22 concaves downward to form the diffusion cavity 2260, and a central axis of the diffusion cavity 2260 may overlap with a central axis of the convergence hole 2250.

The shunt region S is disposed corresponding to the diffusion cavity 2260, and a shape and an area of the shunt region S may be consistent or approximately consistent with a shape and an area of a cross section of the diffusion cavity 2260 respectively. The shunt region S may include a center region S1 located at a center and a peripheral region S2 surrounding the center region S1. A distribution density of the plurality of airflow holes 250 in the center region S1 is less than a distribution density in the peripheral region S2, to form a mesh hole structure with a sparse center and a dense periphery. The hot air flowing out from the convergence hole 2250 and diffused to the diffusion cavity 2260 may cause pressure in the center is relatively great and pressure at the periphery is related small, and the mesh hole structure is set to have a sparse center and a dense periphery, so that a flow distribution of the hot air flowing out from the airflow holes 250 in the center region S1 and the peripheral region S2 is more uniform, and the heating of the vaporization medium is more uniform. In this embodiment, the plurality of airflow holes 250 in the center region S1 are distributed at uniform intervals, and the plurality of airflow holes 250 in the peripheral region S2 are distributed at uniform intervals. In other embodiments, the distribution density of the plurality of airflow holes 250 in the shunt region S may alternatively gradually increase from the center to the periphery.

In some embodiments, the heating assembly 2 may further include a temperature measuring element 233 configured to measure an air temperature in the heating assembly 2. The temperature measuring element 233 generally may be a temperature sensor such as a thermal resistor. The temperature measuring element 233 may be disposed on a lower side of the heating cover 22 and configured to measure the air temperature at an entrance of the convergence hole 2250. A bottom of the heating cover 22 may form a wire groove 2240 for mounting the temperature measuring element 233, and the wire groove 2240 and the convergence groove 2230 may be respectively disposed on two opposite sides of the convergence hole 2250. In some other embodiments, the temperature measuring element 233 may be alternatively disposed on an upper side of the heating cover 22 and configured to measure the air temperature at the entrance of the convergence hole 2250, and a top of the heating cover 22 may also form a wire groove 2270 for mounting the temperature measuring element 233.

The upper cap 27 is covered on the heating cover 22 and the shunt mesh 25 and may be made of a material with high temperature resistance and low thermal conductivity such as steatite porcelain. In some embodiments, the upper cap 27 may include a first cover body 271 located at a lower portion and having a relatively large shape size and a second cover body 272 located at an upper portion and having a relatively small shape size. A bottom surface of the first cover body 271 concaves upward to form an accommodating cavity 2710, and a top surface of the second cover body 272 concaves downward to form a vaporization cavity 2720 in communication with the accommodating cavity 2710. The vaporization cavity 2720 may be configured to place a vaporization medium, and a size of a cross section of the vaporization cavity 2720 may be less than a size of a cross section of the accommodating cavity 2710. The upper portion of the heating cover 22 is disposed in the accommodating cavity 2710, and the heating cover 22 abuts against a cavity wall of the accommodating cavity 2710 through the thermal insulation protrusion 2211, to prevent direct contact thermal conduction between the outer wall surface of the heating cover 22 and an inner wall surface of the accommodating cavity 2710. The outer periphery of the shunt mesh 25 may protrude outward to form at least one limiting protrusion 251, and the shunt mesh 25 abuts against the inner wall surface of the accommodating cavity 2710 through the at least one limiting protrusion 251, which can greatly reduce a direct contact area between the shunt mesh 25 and the upper cap 27 to facilitate thermal insulation. In this embodiment, there are a plurality of limiting protrusions 251, which are distributed at intervals around the shunt mesh 25. A seal pad 24 may be further disposed between the shunt mesh 25 and the upper cap 27 and/or between the shunt mesh 25 and the heating cover 22. The seal pad 24 may be in a shape of a circular plate and may be made of an elastic material with high temperature resistance such as silica gel.

In some embodiments, the heating body 20 may further include a replaceable filter mesh 26 disposed above the shunt mesh 25. A vent gap 260 is formed between a bottom surface of the replaceable filter mesh 26 and a top surface of the shunt mesh 25, and a plurality of first filter holes 2610 for airflow to run through are distributed on the replaceable filter mesh 26. The replaceable filter mesh 26 may be made of a metal material with high temperature resistance such as stainless steel and configured to place solid vaporization medium such as tobacco leaves, and the replaceable filter mesh 26 is taken out after the vaporization medium is heated, which is easy to discard or easy for a user to clean and reuse the replaceable filter mesh, thereby reducing pollution to the shunt mesh 25. The replaceable filter mesh 26 is detachably disposed in the vaporization cavity 2720, and an outer edge of the replaceable filter mesh 26 may concave inward to form at least one groove 2611, so that an area of an entire cross section of the replaceable filter mesh 26 is less than an area of an entire cross section of the vaporization cavity 2720. The at least one groove 2611 may facilitate the user to take out the replaceable filter mesh 26 by using tools such as a nipper, and a contact area between the replaceable filter mesh 26 and the upper cap 27 may be reduced to facilitate thermal insulation. In this embodiment, there are a plurality of grooves 2611, which are distributed at intervals around the replaceable filter mesh 26.

In this embodiment, the replaceable filter mesh 26 may be in a shape of a flat plate, and a shape and a size of the replaceable filter mesh may be consistent or approximately consistent with a shape and a size of the shunt region S of the shunt mesh 25 respectively. The replaceable filter mesh 26 includes a first region A1 located at a center and a second region A2 surrounding the first region A1. The first region A1 and the second region A2 are disposed corresponding to the center region S1 and the peripheral region S2 respectively, and a distribution density of the plurality of first filter holes 2610 in the first region A1 is less than a distribution density in the second region A2, to form a mesh hole structure with a sparse center and a dense periphery, so that a flow distribution of the hot air is more uniform and the heating of the vaporization medium is more uniform. In this embodiment, the plurality of first filter holes 2610 in the first region A1 are distributed at uniform intervals, and the plurality of first filter holes 2610 in the second region A2 are distributed at uniform intervals. In another embodiment, the distribution density of the plurality of first filter holes 2610 on the replaceable filter mesh 26 may alternatively gradually increase from a center to a periphery.

In some embodiments, the heating assembly 2 may further include a seal ring 28 sleeved on the second cover body 272 and a locking member 29 configured to lock the upper cap 27 and the base 21. The seal ring 28 may be in a shape of a circle and may be made of an elastic material with high temperature resistance such as silica gel. The locking member 29 may be made of a metal material with high temperature resistance such as stainless steel. The locking member 29 is in a shape of a square ring provided with an opening on one side and may include a bottom wall 291 and two L-shaped clamp arms 292 respectively extending upward from two ends of the bottom wall 291. The locking member 29 surrounds the base 21 and the first cover body 271, to lock the upper cap 27 and the base 21.

FIG. 10 to FIG. 11 show a heating assembly 2 in a second embodiment of the present invention, and a main difference between the second embodiment and the first embodiment lies in that, in this embodiment, the temperature measuring element 233 is disposed on an upper side of the heating cover 22 and configured to measure an air temperature at the entrance of the convergence hole 2250. In addition, the replaceable filter mesh 26 in this embodiment may include a flat plate-shaped bottom wall 261 and a cylindrical protruding portion 2612 extending upward from the bottom wall 261. A plurality of first filter holes 2610 are distributed on the bottom wall 261, a distribution of the plurality of first filter holes 2610 on the bottom wall 261 is similar to the distribution of the flat plate-shaped replaceable filter mesh 26 in the first embodiment, and details are not described herein again. An outer edge of the bottom wall 261 concaves inward to form at least one groove 2611, which facilitates the user to take out the replaceable filter mesh 26 by using tools such as a nipper, and a contact area between the replaceable filter mesh 26 and the upper cap 27 may be reduced to facilitate thermal insulation. A bottom surface of the bottom wall 261 may further protrude downward to form at least one bump 2614, and the replaceable filter mesh 26 may abut against the shunt mesh 25 through the bump 2614. In this embodiment, there are four bumps 2614, which are respectively located at four corners of the protruding portion 2612.

The protruding portion 2612 is in a shape of an inverted hollow cylinder, and a side wall and a top wall of the protruding portion are respectively provided with a plurality of second filter holes 2613 for airflow to run through. The hot air may flow into the vaporization cavity 2720 through the plurality of second filter holes 2613, to increase a contact area with the vaporization medium, so that the heating and vaporization are more uniform.

FIG. 12 to FIG. 13 show a heating assembly 2 in a third embodiment of the present invention, and a main difference between the second embodiment and the first embodiment lies in that, in this embodiment, the temperature measuring element 233 is disposed on an upper side of the heating cover 22 and configured to measure an air temperature at the entrance of the convergence hole 2250. In addition, the replaceable filter mesh 26 in this embodiment is in a shape of a bowl and may include a flat plate-shaped bottom wall 261, a cylindrical side wall 262 extending upward from an outer periphery of the bottom wall 261, and a circular flange 263 extending outward from an upper periphery of the cylindrical side wall 262. A plurality of first filter holes 2610 are distributed on the bottom wall 261, a distribution of the plurality of first filter holes 2610 on the bottom wall 261 is similar to the distribution of the flat plate-shaped replaceable filter mesh 26 in the first embodiment, and details are not described herein again.

The flange 263 may abut against the upper end surface of the heating cover 22, to facilitate mounting and positioning of the replaceable filter mesh 26 in the vaporization cavity 2720.

The cylindrical side wall 262 may be approximately in a shape of a funnel and a size of a cross section thereof decreases from top to bottom. A plurality of third filter holes 2620 for airflow to run through are distributed on the cylindrical side wall 262, and an airflow gap 2621 is formed between the cylindrical side wall 262 and the inner wall surface of the vaporization cavity 2720, so that the hot air may flow into the vaporization cavity 2720 through the airflow gap 2621 and the third filter holes 2620 sequentially, to make the heating and vaporization more uniform. In addition, the cylindrical side wall 262 is not in contact with the upper cap 27, which facilitates thermal insulation between the replaceable filter mesh 26 and the upper cap 27.

FIG. 14 shows a heating assembly 2 in a fourth embodiment of the present invention, and a main difference between the fourth embodiment and the first embodiment lies in that, in this embodiment, the heating assembly 2 further includes a paste guide body 26 a disposed above the shunt mesh 25 and configured to place a paste vaporization medium, so that the replaceable filter mesh 26 is not required. The paste guide body 26 a may use an absorbing structure with a capillary adsorption function, so that after the paste vaporization medium is heated and melted, the melted liquid is absorbed and prevented from flowing to the shunt mesh 25.

It may be understood that, the foregoing technical features may be combined and used freely without limitation.

While the invention has been illustrated and described in detail in the drawings and foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. It will be understood that changes and modifications may be made by those of ordinary skill within the scope of the following claims. In particular, the present invention covers further embodiments with any combination of features from different embodiments described above and below. Additionally, statements made herein characterizing the invention refer to an embodiment of the invention and not necessarily all embodiments.

The terms used in the claims should be construed to have the broadest reasonable interpretation consistent with the foregoing description. For example, the use of the article “a” or “the” in introducing an element should not be interpreted as being exclusive of a plurality of elements. Likewise, the recitation of “or” should be interpreted as being inclusive, such that the recitation of “A or B” is not exclusive of “A and B,” unless it is clear from the context or the foregoing description that only one of A and B is intended. Further, the recitation of “at least one of A, B and C” should be interpreted as one or more of a group of elements consisting of A, B and C, and should not be interpreted as requiring at least one of each of the listed elements A, B and C, regardless of whether A, B and C are related as categories or otherwise. Moreover, the recitation of “A, B and/or C” or “at least one of A, B or C” should be interpreted as including any singular entity from the listed elements, e.g., A, any subset from the listed elements, e.g., A and B, or the entire list of elements A, B and C. 

What is claimed is:
 1. A heating assembly, comprising: a heating body; a shunt mesh disposed on the heating body; an upper cap covered on the heating body and the shunt mesh; and a replaceable filter mesh disposed above the shunt mesh and configured to place a vaporization medium, wherein a vaporization cavity in air communication with a heating element is formed on the upper cap, and wherein the replaceable filter mesh is replaceably disposed in the vaporization cavity.
 2. The heating assembly of claim 1, wherein a vent gap is formed between the replaceable filter mesh and the shunt mesh.
 3. The heating assembly of claim 1, wherein the replaceable filter mesh comprises a bottom wall, and wherein a plurality of first filter holes for airflow to run through are distributed on the bottom wall.
 4. The heating assembly of claim 3, wherein the bottom wall comprises a first region located at a center and a second region surrounding the first region, and wherein a distribution density of the plurality of first filter holes in the first region is less than a distribution density of the plurality of first filter holes in the second region.
 5. The heating assembly of claim 3, wherein a distribution density of the plurality of first filter holes on the bottom wall gradually increases from a center to a periphery.
 6. The heating assembly of claim 3, wherein the bottom wall protrudes upward to form a cylindrical protruding portion, and wherein a top wall and a side wall of the protruding portion are provided with a plurality of second filter holes for airflow to run through.
 7. The heating assembly of claim 3, wherein the replaceable filter mesh comprises a cylindrical side wall extending upward from an outer periphery of the bottom wall.
 8. The heating assembly of claim 7, wherein an airflow gap is formed between an outer wall surface of the cylindrical side wall and an inner wall surface of the vaporization cavity, and wherein the cylindrical side wall is provided with a plurality of third filter holes for airflow to run through.
 9. The heating assembly of claim 7, wherein a size of a cross section of the cylindrical side wall decreases from a top of the cylindrical side wall to a bottom of the cylindrical side wall.
 10. The heating assembly of claim 7, wherein the replaceable filter mesh comprises a flange extending outward from an upper outer edge of the cylindrical side wall, and wherein the flange abuts against an upper end surface of a heating cover.
 11. The heating assembly of claim 1, wherein the replaceable filter mesh is in a shape of a plate, and wherein an outer edge of the replaceable filter mesh concaves inward to form at least one groove.
 12. The heating assembly of claim 1, wherein the heating body comprises a base, a heating cover disposed on the base, and a heating element disposed between the base and the heating cover and in air communication with the vaporization cavity.
 13. The heating assembly of claim 12, wherein a heating cavity configured to place the heating element is formed between the base and the heating cover, wherein a diffusion cavity is formed between the heating cover and the shunt mesh, and wherein a convergence hole communicating the heating cavity with the diffusion cavity is formed on the heating cover.
 14. The heating assembly of claim 13, wherein the shunt mesh comprises a shunt region disposed corresponding to the diffusion cavity, and wherein a plurality of airflow holes for airflow to run through are distributed on the shunt region, wherein the shunt region comprises a center region located at a center of the shunt region and a peripheral region surrounding the center region, and wherein a distribution density of the plurality of airflow holes in the center region is less than a distribution density of the plurality of airflow holes in the peripheral region.
 15. The heating assembly of claim 13, wherein a central axis of the convergence hole overlaps with a central axis of the diffusion cavity.
 16. A vaporization device, comprising: a body; and the heating assembly of claim 1 disposed in the body. 